You're saying that a bottom was made last week, specifically Fri the 21st.
What has to occur this Monday to negate your prediction?
If the market closes down? Would that make your prediction flat out wrong since you were so adamant on your time frame (before or after the 20th)?
I don't know of any system that gives a buy signal without some kind of triggering. The action of Friday would trigger more sell signals than buy signals IMHO. The NDX pierced the Sept low with no bounce whatsoever. In fact, at the end of the day, it drifted down even more only to give a dead cat bounce back to resistance.
Also, since you were so clear on the day of the bottom, the 21st, don't you have a potential upside target? Was that +500 on the NDX?
Just thoughts...